ITEM NAME:2Pcs 500K Ohm Single Linear Taper Potentiometers with on/off Switch R5Z2 2Pcs 500K Ohm Single Linear Taper Potentiometers with on/off Switch R5Z2 Product Name : Switch Carbon Potentiometer; Model : WH138 Technology : Carbon Composition Rated Power : 0.2W/0.1W; Resistance Value : 500K Ohm Shaft Diameter : 6mm / 0.24"; Shaft Length : 13.5mm / 0.53" Base Height : 12mm / 0.47"; Base Diameter : 24mm / 0.94" Package Content : 2 x Switch Carbon Potentiometer Color : as shown Weight : 32g WH138 Single Linear Switch Carbon Potentiometer. 3 Terminals, Switch Carbon Taper Potentiometer. Application: Adjust Timer, Speed, Temperature. Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm..Rated Power : 0.2W/0.1W; Resistance Value : 500K Ohm.